Tandem steam hydraulic apparatus



E. N. GlLLING.

TANDEM STEAM HYDRAULIC APPARATUS.

APPLICATION FILED FEB. 10, 1920.

1,407, 4 Patented Feb."21,1 922.

3 SHEETS-SHEET I mv zu'roa I E. N. GILLING.

TANDEM STEAM HYDRAULIC APPARATUS.

APPLICATION FILED FEB. I0 I920.

Patented Feb. 21, 1922.

3 SHEETS-SHEET 2- FIG.- 2

FIG. 3

INVENTOR E. N. G-I LLING. TANDEM STEAM HYDRAULIC APPARATUS.

APPLICATION man. FEB. 10} 1920. 1,407, Patented Feb. 21, .1922.

3 SHEETS-SBEET a.

FIG. 4

INVENTOR ENGINEERING & FOUNDRY COMPANY, or rrr'r'sB Rerr, PENNSYLVANIA, A coit- .PORATION or rENNsYLvANrA.

TANDEM STEAM HYDRAULIC APPARATUS.

Application filed February 10, 1920. Serial No. 357,620.

To all whom it may concern:

Be it known that I, ETHELBE-RT N. GILLING, a citizen of the United States, and resident of Pittsburgh, in the county of Allegheny and State. ofPennsylvania, have invented a new and useful Improvement in Tandem Steam Hydraulic Apparatus; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to steam hydraulic intensifier apparatus such as used in connection with hydraulic presses, hammers, shears and the like. These presses have of late been desired of very large capacity, and a serious problem has been encountered in developing sufficient power within a relatively small space because of'the great size of the intensifier cylinder and the difliculty of'maintaining the operating parts in proper Working condition where such tremendous power is developed, and of utilizing the press economically where such tremendous power is not required, for example, in forging operations where relatively smaller and lighter forgings are to be produced, and where it is desirable to reduce the capacity of the press, at will.

. In the accompanying drawings, Flg. 1. 1s

a side view largely conventional of an apparatus embodying my invention; Fig. 2 is a longitudinal vertical section ofthe cylinders on the supply line of steam to the cylinders showing part of the piping'in full line. Fig. is a likeview of the cylinder on a line through the exhaust connections to the upper parts of the cylinder. Fig. a is an enlarged view partly in section of the main controlling valve and piping whensupplying steam to both cylinders; and Fig. 5 is a like view at an angle thereto when supplying steam to the lower cylinder.

and other mechanisms as emp My inventionprovides simple and convenient means for the development of a press of very large capacity and power for heavy work; and where in the development of a; single intensifier cylinder; an excessively, large cylinder would be required. By employing a main intensifier cylinder and an auxiliaryintensifier cylinder, as herein gen erally described, both cylinders can be controlled by the same steam supply exhaust oy'ed for a single cylinder, while by the provision of an additional valve and piping, the auxiliary cyllnder may be maintained in condition and may be put into and out of operation as de Specification of Letters Patent. Patented Feb, 21,. 1922, v

sired. The accompanying drawings illustrate a preferred embodiment of the invention, but it is to be understood that the invention is intended to bef covered broadly within'the scope of the claims, andthat-various changes may be made in the details of construction and combination and arrangement of parts "to that end.

The invention isillustrated in connection with a forging press 1 having the stationary anvil or bed 2, the movable head 3 and the February 20th, 1906, andv also as shown in application for patent'filed-by ThomasWV. Hand, on the 19th day of January, 1918, Serial No. 212,550. In such valve mechanism- 10 is the steam supply valve fed b-y the steam inlet 11. and 12 is the steam exhaust valve communicating with themain-steam exhaust pipe 13, and the floating lever construction 14 disclosed in said p-atent and'application is illustrated as controlled by the hand lever 15' and by the inclined bar-16 fixed hydraulic press cylinder4 with the lifting to the movablemember 17 of the hydraulic ram 7 of the intensifier and operating on the bell crank lever 25. An'y suitable form of main valve controlling mechanism may of course be employed,

'The intensifier 181s supported by the foun dation plate 19 resting onthe foundation 20 on which is supported the main steam cylin-' der 21 and above the same the auxiliary. steam cylinder 22, and also the ram 7, the invention-being illustrated as having the stationary member of the ram'formed of the ram cylinder 23 supported in the foundation plate 19 while the movable member or plunger 24 is attached to and. supported by the cross head 1.7. In the main cylinder 21 is the piston 27 to which is axially connected the piston rod 2S-which extends through the top plate 29 of the main cylinder and the bottom plate 30 of the auxiliary cylinder and is connected to the piston 31 of said aur .ary cylinder. The piston 27 of the main cylinder is also shown as having the connecting rods 32 extending down through the bottom plate 33 of the main cylinder and connected to the cross head 1'? carrying the ran'iplunger 24 above referred to. These parts are all suitably packed, as is usual in apparatus of this yp r The upper ends of the main steam cylinder 21 and the auxiliary cylinder 22 communicate by continuously open ports 35 and 86 respectively, with the exhaust steam pipe 3'? which leads down to the main exhaust steam pipe 13, the upper ends of the cylinders being thus always in communication with the main exhaust steam pipe. Steam is admitted to and withdrawn from the lower or steam pressure side of the main cylinder piston 27 through the main steam inlet pipe 38 leading from the steam inlet valve 10 and exhaust valve 12 to the port 39 which communicates directly with the lowerpart of the main steam cylinder 21. Thispipe 38 then leads to the controlling valve 40 which controls the inlet and outlet of steam to and from the auxiliary steam cylinder 22 through the port 41 which leads through the pipe 42 to the lower or pressure side of the auxiliary cylinder piston, opening into the cylinder at 48. The control valve 40 (see Figs. 4 and 5) is formed of a casing 44 having. the two center diaphragms 45 and 45 on each side of the port 41 leading to the upper or auxiliary steam cylinder. In this valve casing are also mounted the shells 46 and 47 in which shells is mounted the piston valve 50 having the valve bodies 48 and 49. The shell 46 has a series of ports 51 communicating with the steam inlet'pipe 38, and the shell 47 has a series of'like' ports 52 communicating with the steam exhaust pipe 37. When the oombined piston valve 50 is in its lower position, as shownin l ig. 4, steam passes from the main steam inlet 38 through the port 41 and pipe 42 into the lower or pressure portion of the auxiliary steam cylinder, the va ve body 49 closing communication from that cylinder to the exhaust piping 37. When the combined valve 50 is raised, as shown in Fig. 5, the valve body 49 opens communication fromv the lower part-of the auxiliary steam cylinder 22 with the exhaust steam pipe 37. lhe valve 50 is operated by an independent valve 54 which may be of any suitable construction, such as an ordina y four-way valve having the pipe 55 leading to the upper end the valve casmg 44 and thc' p1pe-56 leading to the lower end of said valve casing, said valve 54 also communicatlng with the steam inlet pipe 57 and steamexhaust pipe 58.

.ln the operation of the machine where both the main steam cylinder and the auxiliary steam cylinders are in use, through any suitable valvemechanism such as the valve mechanism illustrated, the supply and exhaust of steam is controlled by'tlie main steam inlet valve 10 and the main exhaust valve 12, the valve gearing being automati cally controlled by the position of the handing lever 15 and valve controlling mecha nism 14, and the actions of the inclined or cam bar 16 on the control lever 25, and the steam is admitted through the steam inlet pipe 88 and the port 39 to the main steam cylinder 21 and then passes in its course through the valve body 40 and pipe 42 to the auxiliary steam cylinder 22. In this operation the upper parts of these cylinders are always in communication with the exhaust pipe 87 and the formation of a vacuum in the operation of thermachine is prevented, while any escape of steam around the pistons is taken care of. In such operation the piston valve 50 is in the position shown in Fig. 4 and connection from the lower side of the auxiliary cylinder to the supplementary exhaust pipe 3'? and thence to the main exhaust is cut off. The feeding to and ex? haust of the steam on the lower or steam pressure sides of the pistons 27 and 31 is through the steam inlet pipe 38 and then forward to the main controlling valves.

Where it is desired to utilize the power developed only in the main intensifier cylinder 21, through the four-way valve 54, the piston valve 50 is raised to the position shown in Fig. 5 and the lower valveportion 48 closes communication from the main steam inlet pipe 38 to the upper-cylinder, while the upper valve portion 49 is raised to provide communicationbetween the lower or pressure side of the auxiliary intensifier cylinder 22 and the auxiliary steam exhaust pipe 37. 7 When the machine is so operated V the piston 31 of the auxiliary intensifier cylinder is in balance, both sides being in communication with the auxiliary exhaust steam pipe 37, the upper part through the port 36 and the lower part through the port 43, pipe 42, piston valve 50' andthence to the pipe 87.

At the same time, the upper part of the main intensifier cylinder is in communication with crating condition, the undesirable effects of cooling and contraction being avoided and under control. As soon as the greater power is required, it may be during the operation upon the same billet or bloom, the supplemental power developed in the auxiliary steam intensifier is added and operates in conjunction with the power developed in the main auxiliary cylinder, and through the main or primary valve controlling apparatus. In such case the operation of the entire press with its full power is under the control of the handing lever 15 and the usual valve gear.

The advantage of my invention may be readily understood by those skilled in the art. By the simple manipulation of the valve 54 and through it the valve 50, the auxiliary intensifier may be put into and out of operation as desired. When put into operation, the power of the intensifier may be practically doubled without changing the stroke of the press, and the apparatus is thus enabled to develop power which might be impracticable on account of the great size of the intensifier cylinder where a single cylinder only was employed, and the operator is enabled to control both cylinders by the same handing lever. WVhen the auxiliary cylinder is put out of use it is properly balanced, and is maintained at the necessary heat by the exhaust steam to be in condition for instant operation in conjunction with the main intensifier cylinder. The.

necessity for duplicating the valve mechamsm is avoided and the machine 1s greatly simplified in construction and arrangement iVhile in the drawings, I have shown the ram of the intensifier cylinder as being underslung, it will be obvious that my invention is not limited to this particular arrangement, but the plunger of the ram may be connected to the intensifier piston in any known manner, and the above description'of opera tion would apply under the changed conditions.

I claim:

1. In a steam hydraulic intensifier, the combination of a main intensifier cylinder, an auxiliary intensifier cylinder, a ram, pistons in said cylinders connected to the ram, valve mechanism for controlling the steam supply of both cylinders when operated together, and auxiliary valve mechanism for cutting off the steam supply of one of said cylinders, whereby the latter may be put into or out of operation at will.

9. In a steam hydraulic intensifier, the combination of a main intensifier cylinder, an auxiliary intensifier cylinder, a ram con nected to the pistons of both cylinders, a common steamsupply for both cylinders,

. valve mechanism controlling such supply,

and auxiliary valve mechanism for control-.

ling the supply to one of said cylinders whereby the latter may be putinto or out of operation at will. 1

3. In a steam hydraulic intensifier, the combination of a main intensifier cylinder, an auxiliary intensifier cylinder, pistons in said cylinders and connected together, a ram connected to the piston of one cylinder, a continuously open exhaust pipe communicating with the upper ends of said cylinders,

a connnonsteam supply pipe communicating with the supply sides of both said cylinders, valve mechanism controlling the g steam supply to both cylinders, and an auxiliary valve controlling the supply to said auxiliary cylinder.

4. In a steam hydraulic intensifier, the combination of a main intensifier cylinder and an auxiliary intensifier cylinder, pistons in said cylinders connected together, a continuously open exhaust pipe and continuously open ports leading from the upper sides-oi said cylinders to said exhaust pipe,

a common valve-controlled ste'ampipe com-' municating with the supply sides of both cylinders, but directly with the main cylinder, .a continuously open exhaust pipe and continuously open ports leading from the upper ends of both cylinders to said exhaust pipe, and anauxiliary valve acting to open and close communication from said steam supply pipeto the supply side of the auxiliary cylinder, and to open and close com- -munication from said supply side of said auxiliary cylinder to said exhaust pipe.

6. In a steam hydraulic intensifier, the combination with a main intensifier cylin der and an auxiliary intensifier cylinder, a ram connected to said pistons within said cylinders, a continuously open exhaust'pipe and continuously open ports leading from the upper side of said cylinders to said ex haust pipe, a steam supply pipe communicating with the supply side of the main cylinder, and a slide valve adapted to open and close communication between the steam supply and the supply side of the auxiliarycylinder, and to open communications between the said side of the auxiliary cylinder and the exhaust pipe. l

'7. In a 'steam hydraulic intensifier, the

combination of a main intensifier cylinder,

an auxiliary intensifier cylinder, a ram connected with the pistons in said cyllnders, a continuously open exhaust pipe and continuously openports leading from the upsupply pipe and With the said Steam eX- per sides of said cylinders to, said exhaust haus't pipe. 10 pipe, :1 steam supply pipe communicating In testimony whereof I, the said ETHEL- with the supply side of the main cylinder, a mum N. (irILLING, have hereunto set my hand.

5 valve having a central opening leading to the ETHELBERT N. GILLING.

supply side of the auxlliery cyl nder, and Witnesses: having a sl1de Ynlve body adapted to alter- J. G. GLIF'roN SEWELL,

nately close communication with the steam Ross E. REssLER. 

